Your assurance that users will not be tracked is nice for decent, honest people, but it also invites disreputable people and organizations to use your search engine to launch cyber attacks on individuals to destroy their reputation and livelihood. You allow organizations that Google and Bing ban to use your search engine for disreputable purposes. I see many lawsuits in your future if you don't start setting some standards for what you allow. There is a reason Google and Bing don't allow these sites to show up in their searches. Duckduckgo is a shady racket.